I was able to add the customer's name on the receipt but the code to replace the unit price did n't work (trying to replace the class pos-receipt-left-padding under the OrderLinesReceipt).
My goal is to display the unit price in its not rounded form (in this case from 6 to 5.60).
This is reflected well on my POS but not on the receipt (see images below):

This is the POS that shows the non-rounded form: 5.60


But the receipt shows 6 not 5.60.


This is the code in my custom module